THE USE OF LIQUID-LIQUID EXTRACTION FOR HEAVY METALS RECOVERY AND REUSE FROM PLATING WASTEWATERS

The viscosity increase of the organic phase when liquid–liquid extraction processes are intensified causes difficulties for hydrometallurgical processes on industrial scale. In this work, we have analyzed this problem for the example of N,N-dialkylamides in the presence of uranyl nitrate experimentally. Furthermore, we present a minimal model at nanoscale that allows rationalizing the experimental phenomena by connecting the molecular, mesoscopic and macroscopic scale and that allows predicting qualitative trends in viscosity. This model opens broad possibilities in optimizing constraints and is a further step towards knowledge-based formulation of extracting microemulsions formed by microstructures with low connectivity, even at high load with heavy metals.

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Multi-element Determination of Heavy Metals in the Han River of Korea Using Liquid-Liquid Extraction-Flame Atomic Absorption Spectrometry.

Eisei kagaku ◽

10.1248/jhs1956.43.243 ◽

1997 ◽

Vol 43 (4) ◽

pp. 243-250 ◽

Cited By ~ 1

Author(s):

WonTae JUNG ◽

SungKu KIM ◽

KyoungJune LEE ◽

DongHuhn SOHN

Keyword(s):

Heavy Metals ◽

Atomic Absorption Spectrometry ◽

Flame Atomic Absorption Spectrometry ◽

Absorption Spectrometry ◽

Liquid Extraction ◽

Element Determination ◽

Han River ◽

Flame Atomic Absorption ◽

Liquid Liquid Extraction

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Liquid-Liquid Extraction of Palladium from Simulated Liquid Waste using Phosphinic Acid as a Carrier

Jurnal Teknologi ◽

10.11113/jt.v68.3029 ◽

2014 ◽

Vol 68 (5) ◽

Cited By ~ 3

Author(s):

Norasikin Othman ◽

Norul Fatiha Mohamed Noah ◽

Raja Norimie Raja Sulaiman ◽

Nurul Ashida Abdullah ◽

Siti Khadijah Bachok

Keyword(s):

Heavy Metals ◽

Industrial Wastewater ◽

Economic Value ◽

Phosphinic Acid ◽

Liquid Waste ◽

Precious Metals ◽

Liquid Extraction ◽

Waste Solution ◽

Liquid Liquid Extraction ◽

Cyanex 302

Nowadays, extraction and recovery of metals from industrial wastewater has become a major concern owing to the toxicity of heavy metals and economic value of precious metals such as gold, palladium and silver. In this research, the extraction of palladium from simulated aqueous solution using liquid-liquid extraction was studied. The organic phase containing bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302) as a carrier was used. Several parameters such as concentration of carrier, type of diluents and stripping agent type and its concentration were investigated. The results showed that at the favourable condition of 0.1 mM Cyanex 302 in kerosene as a diluent, and 2.0 M of thiourea in 1.0 M sulphuric acid as a stripping agent, almost 100% of palladium was extracted from the liquid waste solution and 90% was recovered in the receiving phase.

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Metal Recovery of Discarded Stacks and Batteries, Liquid-Liquid Extraction and Stripping Parameters Effect

Materials Science Forum ◽

10.4028/www.scientific.net/msf.727-728.486 ◽

2012 ◽

Vol 727-728 ◽

pp. 486-490 ◽

Cited By ~ 1

Author(s):

Kellie Provazi ◽

Denise Crocce Romano Espinosa ◽

Jorge Alberto Soares Tenório

Keyword(s):

Electric Furnace ◽

Acid Leaching ◽

Liquid Extraction ◽

Copper Recovery ◽

Nickel Recovery ◽

Cyanex 272 ◽

Metal Separation ◽

Liquid Liquid Extraction ◽

Metals Recovery ◽

Cobalt Recovery

The purpose of this paper is to study metal separation from a sample composed of a mixture of the main types of spent household batteries, using a hydrometallurgical route, evaluating the parameters effect of the liquidliquid extraction, with Cyanex 272, and stripping. The preparation of solution consisted of: grinding the waste of mixed batteries, reduction and volatile metals elimination using electric furnace and acid leaching. With the best results obtained after liquidliquid extraction and stripping it was possible to get 4 solutions of metal sulfates that they could be used in posterior metals recovery by electroplating, they are: 1) to copper recovery: Cu 203.7 g L-1+ Co 20.8 g L-1+ Mn 2,626.6 g L-1; 2) to cobalt recovery: Co 364.0 g L-1; to manganese recovery: Mn 49,929.0 g L-1and 4) to nickel recovery: Ni 1,241.9 g L-1.

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